Average Co-Inventor Count = 1.00
ph-index = 3
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Kerr-Mcgee Coal Corporation (4 from 14 patents)
4 patents:
1. 4417840 - Particulate material transfer system
2. 4396339 - Particulate material transfer system
3. 4290725 - Particulate material transfer system
4. 4277215 - Articulate material transfer system